philosopher n

Late ME < L. < Gk φιλος, loving + υοφύς, wise.

  1. Wise person; knowledgeable one; educated person; professor.
  2. Serious student; deep thinker; one who ponders; person who contemplates; somber scholar; solemn seer.
  3. Alchemist; one who seeks a method for converting the baser metals into gold; scientist who believes in the existence of a “philosopher's stone” which will turn metals into gold.
  4. Person aware of the laws of gravity, e.g. Isaac Newton.